SQFlash
Industrial Class 10 Micro SD Card
Specifications subject to change without notice, contact your sales representatives for the most update information.
REV 0.3 Page 15 of 22 May. 4, 2016
microSD Interface Timing (High-Speed Mode)
Card Input Timing (High Speed Card)
Card Output Timing (High Speed Mode)
Parameter Symbol Min Max Unit Remark
Clock CLK (All values are referred to min(V
IH
) and max(V
IL
)
Clock frequency Data Transfer
Mode
f
PP
0 50 MHz
C
card
≤ 10 pF
(1 card)
Clock low time t
WL
7 ns
C
card
≤ 10 pF
(1 card)
Clock high time t
WH
7 ns
C
card
≤ 10 pF
(1 card)
Clock rise time t
TLH
3 ns
C
card
≤ 10 pF
(1 card)
Clock fall time t
THL
3 ns
C
card
≤ 10 pF
(1 card)
Inputs CMD, DAT (referenced to CLK)
Input set-up time t
ISU
6 ns
C
card
≤ 10 pF
(1 card)
Input hold time t
IH
2 ns
C
card
≤ 10 pF
(1 card)
Outputs CMD, DAT (referenced to CLK)
Output Delay time during Data
Transfer Mode
t
ODLY
14 ns
C
L
≤ 40 pF
(1 card)
Output Hold time T
OH
2.5 ns
C
L
≤ 15 pF
(1 card)
Total System capacitance of
each line¹
C
L
40 pF
C
L
≤ 15 pF
(1 card)
(1) In order to satisfy severe timing, host shall drive only one card.
